Effects of an Off-centered Tool on Multi-component Monopole and Dipole Logging
Recent logging tools have monopole and dipole sources in one system, and the monopole and dipole components are acquired by adding or subtracting responses at four monopole (pressure) receiver arrays at right angles. We investigate the effects of tool eccentricity on this monopole receiver array s...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Technical Report |
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Massachusetts Institute of Technology. Earth Resources Laboratory
2011
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| Online Access: | http://hdl.handle.net/1721.1/67860 |
| _version_ | 1811072902844383232 |
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| author | Byun, Joongmoo Toksoz, M. Nafi |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Byun, Joongmoo Toksoz, M. Nafi |
| author_sort | Byun, Joongmoo |
| collection | MIT |
| description | Recent logging tools have monopole and dipole sources in one system, and the monopole and dipole components are
acquired by adding or subtracting responses at four monopole (pressure) receiver arrays at right angles. We investigate the effects of
tool eccentricity on this monopole receiver array system for three different eccentricity directions. To simulate responses at each
receiver array, we use the discrete wavenumber method. An off-centered dipole source produces nondipole modes as well as the
dipole mode and the responses detected at each receiver array have different features as eccentricity direction varies, showing the
similar pattern for both fast and slow formation. We separate the modes included in a response and compare the amplitude of each
mode to the other modes. By considering responses at each array separately, we can precisely resolve the effects associated with
eccentricity direction. |
| first_indexed | 2024-09-23T09:20:42Z |
| format | Technical Report |
| id | mit-1721.1/67860 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:20:42Z |
| publishDate | 2011 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/678602019-04-12T15:05:21Z Effects of an Off-centered Tool on Multi-component Monopole and Dipole Logging Byun, Joongmoo Toksoz, M. Nafi Massachusetts Institute of Technology. Earth Resources Laboratory Byun, Joongmoo Toksoz, M. Nafi Recent logging tools have monopole and dipole sources in one system, and the monopole and dipole components are acquired by adding or subtracting responses at four monopole (pressure) receiver arrays at right angles. We investigate the effects of tool eccentricity on this monopole receiver array system for three different eccentricity directions. To simulate responses at each receiver array, we use the discrete wavenumber method. An off-centered dipole source produces nondipole modes as well as the dipole mode and the responses detected at each receiver array have different features as eccentricity direction varies, showing the similar pattern for both fast and slow formation. We separate the modes included in a response and compare the amplitude of each mode to the other modes. By considering responses at each array separately, we can precisely resolve the effects associated with eccentricity direction. Massachusetts Institute of Technology. Earth Resources Laboratory Massachusetts Institute of Technology. Borehole Acoustics and Logging Consortium 2011-12-21T22:11:50Z 2011-12-21T22:11:50Z 2003 Technical Report http://hdl.handle.net/1721.1/67860 Earth Resources Laboratory Industry Consortia Annual Report;2003-01 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Byun, Joongmoo Toksoz, M. Nafi Effects of an Off-centered Tool on Multi-component Monopole and Dipole Logging |
| title | Effects of an Off-centered Tool on Multi-component Monopole and Dipole Logging |
| title_full | Effects of an Off-centered Tool on Multi-component Monopole and Dipole Logging |
| title_fullStr | Effects of an Off-centered Tool on Multi-component Monopole and Dipole Logging |
| title_full_unstemmed | Effects of an Off-centered Tool on Multi-component Monopole and Dipole Logging |
| title_short | Effects of an Off-centered Tool on Multi-component Monopole and Dipole Logging |
| title_sort | effects of an off centered tool on multi component monopole and dipole logging |
| url | http://hdl.handle.net/1721.1/67860 |
| work_keys_str_mv | AT byunjoongmoo effectsofanoffcenteredtoolonmulticomponentmonopoleanddipolelogging AT toksozmnafi effectsofanoffcenteredtoolonmulticomponentmonopoleanddipolelogging |